When I smoke a brisket, it is always done (to finish temp) quicker than recipes or other advice say it will be. I see references to 8 to 10 to 12 hour smoke times for brisket. Im always at temp in half that time or less (using a digital temp probe that is reliable). Havent poisoned anyone yet, briskets are always good, but explain to me why I should leave it longer, and generally what makes the difference between performance and expectations Im seeing?